<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>

		</el-breadcrumb>
		<!-- 卡片视图区域 -->
		<el-card>
			<!-- 提示区域 -->
			<el-alert title="添加商品信息" type="info" show-icon :closable="false">
			</el-alert>
			<!-- 步骤条区域-->
			<el-steps align-center :space="200" :active="activeIndex-0" finish-status="success">
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品图片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>

			<!-- tab栏区域-->
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
				<el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave"
					@tab-click="tabClicked">
					<el-tab-pane label="基本信息" name="0">
						<el-form-item label="商品名称" prop="goods_name">
							<el-input v-model="addForm.goods_name"></el-input>
						</el-form-item>
						<el-form-item label="商品价格" prop="goods_price">
							<el-input v-model="addForm.goods_price" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品重量" prop="goods_weight">
							<el-input v-model="addForm.goods_weight" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品数量" prop="goods_number">
							<el-input v-model="addForm.goods_number" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品分类" prop="goods_cat">
							<el-cascader expand-trigger="hover" v-model="addForm.goods_cat" :options="catelist"
								:props="cateProps" @change="handleChange"></el-cascader>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品参数" name="1">
						<!-- 商品参数 渲染表单的Item项 -->
						<el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
							<!-- 复选框组 -->
							<el-checkbox-group v-model="item.attr_vals">
								<el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
							</el-checkbox-group>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品属性" name="2">
						<!-- 商品属性 -->
						<el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
							<el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品图片" name="3">
						<!-- 商品图片 -->
						<!-- action 表示图片要上传到的后台API地址-->
						<el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove"
							list-type="picture" :headers="headerObj" :on-success="handleSuccess">
							<el-button size="small" type="primary">点击上传</el-button>
						</el-upload>
					</el-tab-pane>
					<el-tab-pane label="商品内容" name="4">
						<!-- 商品内容 富文本编辑器组件-->
						<quill-editor v-model="addForm.goods_introduce"></quill-editor>
						<!-- 添加商品的按钮 -->
						<el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
					</el-tab-pane>


				</el-tabs>
			</el-form>
		</el-card>

		<!--图片预览-->
		<el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
			<img :src="previewPath" alt class="previewImg" />
		</el-dialog>
	</div>
</template>

<script>
	//导入拷贝
import _ from 'lodash'
	
	export default {
		data() {
			return {
				activeIndex: '0',
				//添加商品的表单数据对象、
				addForm: {
					goods_name: '',
					goods_price: 0,
					goods_weight: 0,
					goods_number: 0,
					//商品所属的分类数组
					goods_cat: [],
					//图片的数组
					pics: [],
					//商品的详情描述
					goods_introduce: '',
					
					attrs:[]
				},
				addFormRules: {
					goods_name: [{
						required: true,
						message: '请输入商品名称',
						trigger: 'blur'
					}],
					goods_price: [{
						required: true,
						message: '请输入商品价格',
						trigger: 'blur'
					}],
					goods_weight: [{
						required: true,
						message: '请输入商品重量',
						trigger: 'blur'
					}],
					goods_number: [{
						required: true,
						message: '请输入商品数量',
						trigger: 'blur'
					}],
					goods_cat: [{
						required: true,
						message: '请输入商品分类',
						trigger: 'blur'
					}]

				},
				//商品分类列表
				catelist: [],
				cateProps: {
					label: 'cat_name',
					value: 'cat_id',
					children: 'children',
				},
				// 动态参数列表数据
				manyTableData: [],
				//静态属性列表
				onlyTableData: [],
				//上传图片的URL地址
				uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
				//图片上传组件的headers请求头对象
				headerObj: {
					Authorization: window.sessionStorage.getItem('token')
				},
				//预览图片
				previewPath: '',
				//隐藏预览图片对话框
				previewVisible: false
			}
		},
		created() {
			this.getCateList()
		},
		methods: {
			//获取所有商品分类数据
			async getCateList() {
				const {
					data: res
				} = await
				this.$http.get('categories')
				if (res.meta.status !== 200) {
					return this.$message.error('获取商品分类数据失败')
				}
				this.catelist = res.data
				console.log(this.catelist)
			},
			// 级联选择器选中项变化,会触发这个函数
			handleChange() {
				console.log(this.addForm.goods_cat)
				if (this.addForm.goods_cat.length !== 3) {
					this.addForm.goods_cat = []
				}
			},
			beforeTabLeave(activeName, oldActiveName) {
				// console.log('即将离开的标签页名字是：'
				// +oldActiveName)
				// console.log('即将进入的标签页名字是：'
				// +activeName)
				// return false
				if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
					this.$message.error('请选择商品分类！')
					return false
				}
			},
			async tabClicked() {
				//console.log(this.activeIndex)
				//证明访问的是动态参数面板
				if (this.activeIndex === '1') {
					//console.log('123')
					const {
						data: res
					} = await this.$http.get(`categories/${this.cateId}/attributes`, {
						params: {
							sel: 'many'
						}
					})
					if (res.meta.status !== 200) {
						return this.$message.error('获取动态参数列表失败')
					}
					console.log(res.data)
					res.data.forEach((item) => {
						item.attr_vals =
							item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
					})
					this.manyTableData = res.data
				} else if (this.activeIndex === '2') {
					const {
						data: res
					} = await this.$http.get(`categories/${this.cateId}/attributes`, {
						params: {
							sel: 'only'
						}
					})
					if (res.meta.status !== 200) {
						return this.$message.error('获取静态属性列表失败')
					}
					//console.log(res.data)
					this.onlyTableData = res.data
				}
			},
			//处理图片预览效果
			handlePreview(file) {
				console.log(file)
				this.previewPath = file.response.data.url
				this.previewVisible = true
			},
			//处理移除图片的操作
			handleRemove(file) {
				//1.获取将要删除的图片的临时路径
				const filePath = file.response.data.tmp_path
				//2.从pics数组中，找到这个图片对应的索引值
				const i = this.addForm.pics.findIndex((x) => x.pic === filePath)
				//3.调用数组的splice方法把图片信息对象
				//从pics数组中移除
				this.addForm.pics.splice(i, 1)
				// console.log(this.addForm)
			},
			//监听图片上传成功的事件
			handleSuccess(response) {
				//console.log(response)
				//1.拼接得到一个图片信息对象
				const picInfo = {
					pic: response.data.tmp_path
				}
				//2.将图片信息对象,push到pics组数中
				this.addForm.pics.push(picInfo)
				console.log(this.addForm)
			},
			// 添加商品
			add() {
				console.log(this.addForm)
				this.$refs.addFormRef.validate(async (valid) => {
						if (!valid) {
							return this.$message.error('请填写必要的表单项')
						}
						//执行添加的业务逻辑
						 //lodash cloneDeep(obj) 拷贝
						const form= _.cloneDeep(this.addForm)
						form.goods_cat = form.goods_cat.join(',')
						  //处理动态参数
						 this.manyTableData.forEach((item) => {
						 const newInfo = {
						 attr_id: item.attr_id,
						 attr_value: item.attr_vals.join(' '),
						       }
						   this.addForm.attrs.push(newInfo)
						   })
						 //处理静态属性
						  this.onlyTableData.forEach((item) => {
						 const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
						 this.addForm.attrs.push(newInfo)
						  })
					    form.attrs = this.addForm.attrs
						console.log(form)
						
						   //发起请求添加商品
						   //商品名称必须是唯一的
						    const { data: res } = await this.$http.post('goods', form)
						   
						           if (res.meta.status !== 201) {
						             return this.$message.error('添加商品失败')
						           }
						           this.$message.success('添加商品成功')
						           this.$router.push('/goods')
					})
				}
				
			},
	 computed: {
	    cateId() {
	      if (this.addForm.goods_cat.length === 3) {
	        return this.addForm.goods_cat[2]
	      }
	      return null
	    }
	  }
}
</script>

<style>
	//marginmargin: 0 5px 0 0 上 右 下 左
	.el-checkbox {
		margin: 0 10px 0 0 !important;
	}

	.previewImg {
		width: 100%;
	}

	.btnAdd {
		margin-top: 20px;
	}
</style>
